For more information on Cisco IOS Release 12.2, see the Cisco IOS Release 12.2 Command Summary.

For task-oriented configuration steps, see the software configuration guide for this release.

In this document, IP refers to IP version 4 (IPv4) unless there is a specific reference to IP version 6 (IPv6).

Accessing the Switch Stack

The Catalyst 2960-S switch running the LAN base image supports stacking. You manage the switch stack and the stack member interfaces through the stack master. You cannot manage stack members on an individual switch basis. You can connect to the stack master through the console port of one or more stack members. Be careful with using multiple CLI sessions to the stack master. Commands you enter in one session are not displayed in the other sessions. Therefore, it is possible to lose track of the session from which you entered commands.

Note We recommend using one CLI session when managing the switch stack.

If you want to configure a specific stack member port, you must include the stack member number in the CLI command interface notation. For more information about interface notations, see the “Configuring Interfaces” chapter in the software configuration guide for this release.

To debug a specific stack member, you can access it from the stack master by using the session stack-member-number privileged EXEC command. The stack member number is appended to the system prompt. For example, Switch-2# is the prompt in privileged EXEC mode for stack member 2, and the system prompt for the stack master is Switch. Only the show and debug commands are available in a CLI session to a specific stack member.

Note Stacking is not supported on Catalyst 2960 or 2960-C switches, or Catalyst 2960-S switches running the LAN Lite image.

CLI Command Modes

This section describes the CLI command mode structure. Command modes support specific Cisco IOS commands. For example, the interface interface-id command only works when entered in global configuration mode.

These are the main command modes for the switch:

User EXEC

Privileged EXEC

Global configuration

Interface configuration

VLAN configuration

Line configuration

Table 1-1 lists the main command modes, how to access each mode, the prompt you see in that mode, and how to exit that mode. The prompts listed use the default name Switch.

From global configuration mode, specify an interface by entering the interface command followed by an interface identification.

Switch(config-if)#

To exit to privileged EXEC mode, enter the end command, or press Ctrl-Z.

To exit to global configuration mode, enter the exit command.

VLAN configuration

In global configuration mode, enter the vlan vlan-id command.

Switch(config-vlan)#

To exit to global configuration mode, enter the exit command.

To return to privileged EXEC mode, enter the end command, or press Ctrl-Z.

Line configuration

From global configuration mode, specify a line by entering the line command.

Switch(config-line)#

To exit to global configuration mode, enter the exit command.

To return to privileged EXEC mode, enter the end command, or press Ctrl-Z.

User EXEC Mode

After you access the device, you are automatically in user EXEC command mode. The EXEC commands available at the user level are a subset of those available at the privileged level. In general, use the user EXEC commands to temporarily change terminal settings, perform basic tests, and list system information.

The supported commands can vary depending on the version of software in use. To display a comprehensive list of commands, enter a question mark (?) at the prompt.

Switch> ?

Privileged EXEC Mode

Because many of the privileged commands configure operating parameters, privileged access should be password-protected to prevent unauthorized use. The privileged command set includes those commands contained in user EXEC mode, as well as the configure privileged EXEC command through which you access the remaining command modes.

If your system administrator has set a password, you are prompted to enter it before being granted access to privileged EXEC mode. The password does not appear on the screen and is case sensitive.

The privileged EXEC mode prompt is the device name followed by the pound sign ( #).

Switch#

Enter the enable command to access privileged EXEC mode:

Switch> enableSwitch#

The supported commands can vary depending on the version of software in use. To display a comprehensive list of commands, enter a question mark (?) at the prompt.

Global Configuration Mode

Global configuration commands apply to features that affect the device as a whole. Use the configure privileged EXEC command to enter global configuration mode. The default is to enter commands from the management console.

When you enter the configure command, a message prompts you for the source of the configuration commands:

The supported commands can vary depending on the version of software in use. To display a comprehensive list of commands, enter a question mark (?) at the prompt.

Switch(config-if)# ?

To exit interface configuration mode and to return to global configuration mode, enter the exit command. To exit interface configuration mode and to return to privileged EXEC mode, enter the end command, or press Ctrl-Z.

VLAN Configuration Mode

Use this mode to configure normal-range VLANs (VLAN IDs 1 to 1005) or, when VTP mode is transparent, to configure extended-range VLANs (VLAN IDs 1006 to 4094). When VTP mode is transparent, the VLAN and VTP configuration is saved in the running configuration file, and you can save it to the switch startup configuration file by using the copy running-config startup-config privileged EXEC command. The configurations of VLAN IDs 1 to 1005 are saved in the VLAN database if VTP is in transparent or server mode. The extended-range VLAN configurations are not saved in the VLAN database.

The supported keywords can vary but are similar to the commands available in VLAN configuration mode. To display a comprehensive list of commands, enter a question mark (?) at the prompt.

Switch(config-vlan)# ?

For extended-range VLANs, all characteristics except the MTU size must remain at the default setting.

To return to global configuration mode, enter exit ; to return to privileged EXEC mode, enter end. All the commands except shutdown take effect when you exit config-vlan mode.

Line Configuration Mode

Line configuration commands modify the operation of a terminal line. Line configuration commands always follow a line command, which defines a line number. Use these commands to change terminal parameter settings line-by-line or for a range of lines.

Use the line vty line_number [ ending_line_number ] command to enter line configuration mode. The new prompt means line configuration mode. The following example shows how to enter line configuration mode for virtual terminal line 7:

Switch(config)# line vty 0 7

The supported commands can vary depending on the version of software in use. To display a comprehensive list of commands, enter a question mark (?) at the prompt.

Switch(config-line)# ?

To exit line configuration mode and to return to global configuration mode, use the exit command. To exit line configuration mode and to return to privileged EXEC mode, enter the end command, or press Ctrl- Z.